Want to use my a recipe my Mom copied from someone but unfortunately there is no leavening in the recipe. (Double unfortunately Mom passed 3 yrs ago) It is a banana muffin recipe and has the usual ingredients of flour, egg, sugar, oil, spices and 1/2 cup milk. I looked up several muffin recipes and some use baking soda, some use baking powder and some a combination of both. How do you determine which should be used in the recipe? I'd greatly appreciate some help from someone who understands the chemistry here.